[issue30708] Ensure that the result of PyUnicode_AsWideCharString() doesn't contain null characters if size is not returned

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka+cpython at gmail.com>:


----------
pull_requests: +2497

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30708>
_______________________________________